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Finding the Fourth Proportional to 602,274.78, 831,140.39 and 330,344.89

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Solution

The fourth proportional to 602,274.78, 831,140.39 and 330,344.89 is: 455,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,274.78 : 831,140.39 = 330,344.89 : x
  2. Step 2: Convert to fraction form
    602,274.78/831,140.39 = 330,344.89/x
  3. Step 3: Cross multiply
    602,274.78x = 831,140.39 × 330,344.89
  4. Step 4: Simplify right side
    602,274.78x = 274,562,980,709.11
  5. Step 5: Solve for x
    x = 274,562,980,709.11/602,274.78
  6. Step 6: Final answer
    x = 455,876.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.